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AFDD Fault arc protector
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AFDD Fault arc protector
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AFDD Fault arc protector
General
AFDD (Arc Fault Detection Devices)isa new type of electrical fireprotectiondevice,which can avoid thefire caused byshort circuit,wire aging,heavyload,poorcontactelectrical product failure and so on.
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Product Details
*Setting Button: The setting button is concealed internally and can be accessed using a paperclip. A short press of
the button will cause the operation light to flash a certain number of times, indicating the current working mode.
A long press will toggle between the four working modes.
Flash once: Interference-resistant mode,suitable for scenarios with strong interference, large machine tools, and
high harmonics pollution (lower sensitivity).
Flash twice: Strict mode,suitable for general factories, centralized lighting, large offices, and places with complex
power conditions.
Flash three times: Normal mode,suitable for residential homes, office buildings, dormitories, and other places with
good power environments.
Flash 4 times: Sensitive mode,suitable for scenarios with long line attenuation and no interference in the power
grid.
General
AFDD (Arc Fault Detection Devices)is a new type of electrical fire protection device,
which can avoid the fire caused by short circuit, wire aging, heavy load, poor contact,
electrical product failure and so on. AFDD built-in computer chip, real-time automatic
control. Its working principle is to process, compare and identify the detected arc pulse
through the electronic circuit and MCU. Once the fault arc pulse that is prone to fire
is detected, a signal is output to drive the tripping device and cut off the load power
supply to prevent fire.Generally it is used in residential buildings, as the end of the
protection of electrical appliances, AFDD application range is very wide, in principle as
long as there is electricity, it can use AFDD to prevent electrical fire, such as residential
buildings, office buildings, hospitals, shopping malls, supermarkets, factories, vehicles
(cars, trains, ships, planes), etc.,especially for the residential for electrical fire preven
tion.
Feature
1. Overload long delay protection
2. Overload short delay protection
3. Instantaneous trip protection
4. Series arc fault protection
5. Parallel arc fault protection
6. Ground arc fault protection
7. Multiple current ratings.
Technical data
| Item | Parameter | Data |
|
Electricalfeatures |
Rated voltage Ue （V） | 230V~ |
| Rated current In (A) | 6A,10A,16A,20A,25A, 32A,40A,50A,63A | |
| Rated sensitivity I ∆ n(A) | 0.03A | |
| Poles | 2P+N、2P | |
| Wave form of the earth leakage sensed | AC | |
| Thermo-magnetic release characteristic | C（5-10In） | |
| Rated short circuit capacity Icn (A) | 6000 | |
| Rated residual making and breaking capacity I ∆ m (A) | 500A(In ≤ 50A),630A(In ≤ 63A) | |
| Rated insulation voltage Ui (V) | 500V | |
| Rated impulse withstand voltage Uimp (V) | 4000V | |
| Pollution degree | 2 | |
|
Mechanicalfeatures |
Electrical life | 10000 |
| Mechanical life | 20000 | |
| Protection degree | IP20 | |
| Ambient temperature (℃ ) | -25~+40 | |
| Storage temperature (℃ ) | -25~+70 | |
| Installation | Tightening torque (N.m) | 2 |
| Terminal size for cable (mm) | 16 | |
| Installation category | Ⅱ |
Product features
AFDD-63 series Arc Fault Detection Devices includes residual current protection, fault arc protection, overload and short circuit protection. The
residual current tripping characteristics of AFDD are shown in Table 2 below.
Technical data
| Model | In(A) | I ∆ n | Time limit for tripping or not tripping | |||
| I ∆ n | 2I ∆ n | 5I ∆ n | ||||
| AFDD-63 |
6A,10A,16A, 20A,25A,32A, 40A,50A,63A, |
>0.03 | 0.03 | 0.15 | Maximumtripping time | |
| 0.03 | 0.03 | 0.15 | ||||
| <0.03 | 0.03 | 0.15 | 0.04 | |||
The arc fault protection function of AFDD mainly includes the arc fault protection detection unit, the unit detects and identifies fault arcs in the line and sendstripping signals, tripping release takes off the operation mechanism of the product and makes the main contact of AFDD-63from closed position to open position, thus disconnecting the fault line and effectively avoiding the fire caused by the arc fault.The time limit for tripping of AFDD-63 with rated voltage 230V are shown in Table 3 and Table 4.
Limit value for tripping of AFDD under small arc current below 63A
| Arc current of test（the effective value） | 3A | 6A | 13A | 20A | 40A | 63A |
| Maximum tripping time | 1s | 0.5s | 0.25s | 0.15s | 0.12s | 0.12s |
Limit value for tripping of AFDD under large arc current above 63A
| Arc current of test（the effective value） | 75A | 100A | 150A | 200A | 300A | 500A |
| N | 12 | 10 | 8 | 8 | 8 | 8 |
Over current protection characteristics (reference temperature 30℃ )
| Type | In(A) | Tripping time | Expected result |
| B,C,D | 1.13In | t ≤ 1h(In ≤ 63A) | Not tripping |
| 1.13In | t ≤ 2h(In>63A) | ||
| B,C,D | 1.45In | t<1h(In ≤ 63A) | Tripping |
| 1.45In | t<2h(In>63A) | ||
| B,C,D | 2.55In | 1s<t<60s(In ≤ 32A) | Tripping |
| 2.55In | 1s<t<120s(In>32A) |
| Type | In(A) | Tripping time | Expected result |
| B,C,D | B | t ≤ 0.1s | Not tripping |
| C | t ≤ 0.1s | ||
| B,C,D | D | t ≤ 0.1s | |
| B | t<0.1s | Tripping | |
| B,C,D | C | t<0.1s | |
| D | t<0.1s |
Overall and mounting dimensions(mm)
Installation and Usage (Maintenance)
a. Before installation, check if the product markings match the intended conditions of use.
b. Before installation, operate the AFDD arc fault protection device to ensure that its mechanism moves smoothly, reliably, and without any
jamming.
c. Connect the input terminal to the power supply and the output terminal to the load.
d. After power is applied, press the test button on the AFDD arc fault protection device several times to confirm its reliable operation.
e. When the handle moves upwards, the MCB (Miniature Circuit Breaker) side handle displays “0N,” and the indicator window changes from
green to red, indicating that the circuit is in the ON state. When the handle moves downwards and the MCB side handle displays “OFF,”
the indicator window changes from red to green, indicating that the circuit is in the OFF state.
f.
During installation, securely fix the AFDD arc fault protection device onto the installation rail to prevent loosening or falling. To remove
the AFDD arc fault protection device, simply pull the stopper.
g. The working reference temperature for the AFDD arc fault protection device is +30+5 ℃ . When the ambient temperature changes, the
rated values should be adjusted accordingly. If multiple AFDD arc fault protection devices are installed in an enclosed enclosure, the
internal temperature of the enclosure will rise, and the rated current should be multiplied by a derating factor of 0.8.
Fault analysis
Fault Analysis and Troubleshooting of AFDD Arc Fault Protection Device can be found in Table 6.
| Fault cause | Fault analysis | Troubleshooting |
Table 6 |
|
| Refusal to operate | The AFDD circuit breakeris not connected to the
neutral wire, causing refusal to operate |
The AFDD circuit breaker is onlyconnected to the phase wire on the
power side and the neutral wire is not connected. |
Connect the neutral wire on the powerside. | |
| False tripping | The AFDD circuit breaker trips due to a short circuit | The line (L) and neutral (N) wiresat the incoming and outgoing
terminals of the AFDD circuit breaker are crossed |
Strictly follow the wiring diagram andthe product markings to correctly
connect the circuit. |
|
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